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Table of Contents
Related Manuals for Omega CYD201A Series
Summary of Contents for Omega CYD201A Series
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Page 3: Table Of Contents
Omega Model CYD201/202 User’s Manual TABLE OF CONTENTS Chapter/Paragraph Title Page INTRODUCTION ................1-1 General ................1-1 Model CYD20X System Description.......1-1 INSTALLATION ................2-1 General ................2-1 Inspection and Unpacking..........2-1 Repackaging For Shipment ...........2-1 Front and Rear Panel Definitions ........2-2 2.3.1 Model CYD201 Definitions .........2-2 2.3.2... - Page 4 Omega Model CYD201/202 User’s Manual LIST OF ILLUSTRATIONS Figure No. Title Page Model CYD201, 202 Temperature Monitor Series ....1-3 Model CYD201 Front Panel ............2-2 Model CYD201 Rear Panel............2-3 Model CYD202S Front Panel............2-4 Model CYD202S Rear Panel ............2-5 Model CYD202D Front Panel............2-6 Model CYD202D Rear Panel ............2-7...
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Page 5: Introduction
Omega Model CYD201/202 User’s Manual CHAPTER 1 INTRODUCTION GENERAL The CYD201, CYD202Series is designed and manufactured in the United States of America with these features: • Bright 4-Digit LED Display of Temperature in K or °C • Temperature Range: 1.4 K to 475 K (–271 °C to 202 °C) •... - Page 6 Omega Model CYD201/202 User’s Manual Diode sensors come in several packaging formats for easy mounting. Unlike a thermocouple, the lead wire in a diode measurement is not the active sensor component; using an additional connector to bring out the sensor signal from a cryogenic and/or vacuum system does not degrade the measurement.
- Page 7 Omega Model CYD201/202 User’s Manual Model Model ° C ° C CYD201 CYD201 Omega Omega CYD201 Temperature Monitor CYD201 Temperature Monitor Model Model CYD202S CYD202S Sensor A Sensor A Sensor B Sensor B Omega Omega CYD202S Temperature Monitor CYD202S Temperature Monitor Channel A °...
- Page 8 Omega Model CYD201/202 User’s Manual Table 1-1. Specifications THERMOMETRY Input/Display: Model CYD201 One input, one display Model CYD202S Two inputs, one display Model CYD202D Two inputs, two displays Measurement type: Two-lead Sensor Type: Silicon Diode Input Voltage Range: 5 Volts Sensor Excitation: 10 µA ±0.2%...
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Page 9: Installation
Inspect shipping containers for external damage. Make all claims for damage (apparent or concealed) or partial loss of shipment in writing to Omega Engineering within five (5) days from receipt of goods. If damage or loss is apparent, please notify the shipping agent immediately. -
Page 10: Front And Rear Panel Definitions
Omega Model CYD201/202 User’s Manual FRONT AND REAR PANEL DEFINITIONS This paragraph defines front and rear panels of the Model CYD201 (Paragraph 2.3.1), Model CYD202S (Paragraph 2.3.2), and Model CYD202D (Paragraph 2.3.3). 2.3.1 Model CYD201 Definitions The Model CYD201 has no front panel controls. The 4-digit red LED displays the temperature in Kelvin (K) or degrees Celsius (°C). -
Page 11: Model Cyd201 Rear Panel
Omega Model CYD201/202 User’s Manual Model CYD201 Definitions (Continued) CAL Trimpot. The CAL trimpot adjusts instrument calibration. Refer to Paragraph 4.4 for details. Screw-Terminal Connector. The diode terminals are marked + for the anode and – for the cathode. VREF and Shield are used during unit calibration. -
Page 12: Model Cyd202S Definitions
Omega Model CYD201/202 User’s Manual 2.3.2 Model CYD202S Definitions The Model CYD202S has one front panel control. The Sensor A/Sensor B switch selects which sensor data to display. Both sensors must conform to the same temperature response curve. The 4-digit red LED displays the selected temperature in Kelvin (K) or degrees Celsius (°C). -
Page 13: Model Cyd202S Rear Panel
Omega Model CYD201/202 User’s Manual Model CYD202S Definitions (Continued) The Model CYD202S rear panel is the same as the Model CYD201 except: The upper screw-terminal connector applies to Sensor A. The lower screw- terminal connector applies to Sensor B. The front panel switch selects between the two sensors. -
Page 14: Model Cyd202D Definitions
Omega Model CYD201/202 User’s Manual 2.3.3 Model CYD202D Definitions The Model CYD202D has no front panel controls. Two 4-digit red LEDs simultaneously display temperatures in Kelvin (K) or degrees Celsius (°C). In essence, the Model CYD202D operates as two independent units with a common power supply. -
Page 15: Model Cyd202D Rear Panel
Omega Model CYD201/202 User’s Manual Model CYD202D Definitions (Continued) Descriptions of the Model CYD202D rear panel are the same as the Model CYD201 except two complete sets of DIP switches (refer to Paragraph 2.3.1), CAL trimpots, and screw-terminal connectors are provided. The upper set applies to Channel A. -
Page 16: Sensor Installation Recommendations
SENSOR INSTALLATION RECOMMENDATIONS Abbreviated sensor installation recommendations for the Model CYD201 are included in this section. Please refer to the Omega Product Catalog for sensor specifications. Call Omega for copies of application notes or with questions or comments concerning sensor installation. -
Page 17: Sensor Mounting
For temporary mounting in cold temperature applications, apply a thin layer ® of Apiezon N Grease between the sensor and sample to enhance thermal contact under slight pressure. The preferred method for mounting the sensor is the Omega CO Adapter. Installation... -
Page 18: Current Source Dependence
Omega Model CYD201/202 User’s Manual Sensor Mounting (Continued) CAUTION: Omega will not warranty replace any device damaged by user- designed clamps or solder mounting. ® For semi-permanent mountings, use Stycast epoxy instead of Apiezon Grease. NOTE: Do not apply Stycast epoxy over the CY7-SD package--sensor stress may shift the readings. -
Page 19: Measurement Errors Due To Ac Noise
To greatly reduce potential AC noise, connect twisted leads (pairs) between the measurement instruments and the diode sensors. Use 32 or 36 AWG Omega Engineering Duo-Twist™ Cryogenic Wire, which features phosphor bronze wire twisted at 3.15 twists per centimeter (8 twists per inch). -
Page 20: Sensor Curve Definition
Curve 10. CY7 Series silicon diodes follow the same standard temperature response Curve 10 and are interchangeable. Curve 10 is programmed into all Omega Temperature Controllers, digital thermometers, and temperature monitors. Silicon Diode Series sensors come in five bands of tracking accuracy. -
Page 21: Panel Mounting
Omega Model CYD201/202 User’s Manual PANEL MOUNTING Panel mount cutout dimensions: Model CYD201 = 91 x 44 mm (3.58 x 1.72 in.); Model CYD202S & CYD202D = 91 mm square (3.58 in. square). Unplug the unit. Use 1/16 inch hex wrench to remove two headless screws. - Page 22 Omega Model CYD201/202 User’s Manual This Page Intentionally Left Blank 2-14 Installation...
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Page 23: Operation
Omega Model CYD201/202 User’s Manual CHAPTER 3 OPERATION GENERAL This chapter describes the front panel controls for each of the three models in Paragraphs 3.1 thru 3.3. TEMPERATURE UNIT SELECTION The temperature scale displayed on the front panel is selected by a DIP Switch labeled K/C on the rear panel. -
Page 24: Front Panel Operation
Omega Model CYD201/202 User’s Manual FRONT PANEL OPERATION The Model CYD201 has no front panel controls. The 4-digit red LED displays the temperature in Kelvin (K) or degrees Celsius (°C). See Figure 2-1. The Model CYD202S has one front panel control. The Sensor A/Sensor B switch is used to select which of two sensors temperature data is displayed. -
Page 25: Service
Omega Model CYD201/202 User’s Manual CHAPTER 4 SERVICE GENERAL This chapter cover General Troubleshooting (Paragraph 4.1), Operating Software Replacement (Paragraph 4.2), the Model CYD201 Printed Circuit Board (PCB) (Paragraph 4.3), and Calibration (Paragraph 4.4). GENERAL TROUBLESHOOTING If there is no power, first verify that 24 VAC is present. Next, check the fuse. -
Page 26: Location Of Fuse And Jumpers
Omega Model CYD201/202 User’s Manual ’ ‘ “ ” • Ž Œ Pin 1 C-200-4-1.eps Figure 4-1. Location of Fuse and Jumpers Service... -
Page 27: Pcb Description
Omega Model CYD201/202 User’s Manual PCB DESCRIPTION Below is a brief description of major components on the Model CYD201/2 Printed Circuit Board (PCB). See Figure 4-1. Microprocessor/ROM (U10). This integrated circuit is a combination microprocessor, program memory, and Precision Option Curve (if present). - Page 28 Omega Model CYD201/202 User’s Manual This Page Intentionally Left Blank Service...
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Page 29: Appendix Acurve Table
Omega Model CYD201/202 User’s Manual APPENDIX A CURVE TABLE Table A-1. CY7 Diode Standard Curve Break- CY7 Standard Curve point No. Temp.(K) Voltage 499.9 0.00000 475.0 0.09032 460.0 0.12536 435.0 0.18696 390.0 0.29958 340.0 0.42238 280.0 0.56707 230.0 0.68580 195.0 0.76717... - Page 30 Omega Model CYD201/202 User’s Manual This Page Intentionally Left Blank Curve Table...